1
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Molina-Aguirre G, Chakraborty S, Košmrlj J, Vuković L, Pinter B. Photophysics of Molecular Probes for Amyloid-β Detection: Computational Insights into the Roles of Probe Linker and Functional Groups. J Phys Chem A 2024; 128:7055-7067. [PMID: 39146450 DOI: 10.1021/acs.jpca.4c01547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
In this computational study, density functional theory (DFT) and time-dependent DFT methods (TD-DFT) were employed to study the optical properties of six families of molecules with donor (D), bridge (B), and acceptor (A) fragments that have potential for use as fluorescent molecular probes for the early detection of Alzheimer's disease. After validating our computational method against experimental data, using X-ray and absorption data, the equilibrium geometries and wave functions of the ground and first singlet excited states were systematically studied. Our simulations demonstrate that the S1 states of these rod-like D-B-A fluorescent probes are twisted intramolecular charge transfer states with a predominant highest occupied molecular orbital-least unoccupied molecular orbital (HOMO-LUMO) character, the former localized primarily at the donor, whereas the latter at the acceptor site. Moreover, the influence of the bridge, donor, and acceptor fragments on molecules' absorption energies is explored, highlighting the influence of double and triple bonds and some specific modifications on the acceptor side, including the addition of electronegative atoms, pyranone derivatives, and their functionalization. By having the absorption energies of 324 probes in hand, machine learning models were trained to predict the absorption energies of molecules. The models were found to be predictive, which suggests a potential that predictive models for other crucial properties, such as emission and quantum yield, can also be trained if suitable training data sets are made available.
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Affiliation(s)
- Gabriela Molina-Aguirre
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Sayantani Chakraborty
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Janez Košmrlj
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Lela Vuković
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Balazs Pinter
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, El Paso, Texas 79968, United States
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2
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Coppola F, Cimino P, Petrone A, Rega N. Evidence of Excited-State Vibrational Mode Governing the Photorelaxation of a Charge-Transfer Complex. J Phys Chem A 2024; 128:1620-1633. [PMID: 38381887 DOI: 10.1021/acs.jpca.3c08366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Modern, nonlinear, time-resolved spectroscopic techniques have opened new doors for investigating the intriguing but complex world of photoinduced ultrafast out-of-equilibrium phenomena and charge dynamics. The interaction between light and matter introduces an additional dimension, where the complex interplay between electronic and vibrational dynamics needs the most advanced theoretical-computational protocols to be fully understood on the molecular scale. In this study, we showcase the capabilities of ab initio molecular dynamics simulation integrated with a multiresolution wavelet protocol to carefully investigate the excited-state relaxation dynamics in a noncovalent complex involving tetramethylbenzene (TMB) and tetracyanoquinodimethane (TCNQ) undergoing charge transfer (CT) upon photoexcitation. Our protocol provides an accurate description that facilitates a direct comparison between transient vibrational analysis and time-resolved spectroscopic signals. This molecular level perspective enhances our understanding of photorelaxation processes confined in the adiabatic regime and offers an improved interpretation of vibrational spectra. Furthermore, it enables the quantification of anharmonic vibrational couplings between high- and low-frequency modes, specifically the TCNQ "rocking" and "bending" modes. Additionally, it identifies the primary vibrational mode that governs the adiabaticity between the ground state and the CT state. This comprehensive understanding of photorelaxation processes holds significant importance in the rational design and precise control of more efficient photovoltaic and sensor devices.
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Affiliation(s)
- Federico Coppola
- Scuola Superiore Meridionale, Largo San Marcellino 10, I-80138 Napoli, Italy
| | - Paola Cimino
- Department of Chemical Sciences, University of Napoli Federico II, Complesso Universitario di M.S. Angelo, 80126 Napoli, Italy
| | - Alessio Petrone
- Scuola Superiore Meridionale, Largo San Marcellino 10, I-80138 Napoli, Italy
- Department of Chemical Sciences, University of Napoli Federico II, Complesso Universitario di M.S. Angelo, 80126 Napoli, Italy
- Istituto Nazionale Di Fisica Nucleare, sezione di Napoli, Complesso Universitario di Monte S. Angelo ed. 6, 80126 Napoli, Italia
| | - Nadia Rega
- Scuola Superiore Meridionale, Largo San Marcellino 10, I-80138 Napoli, Italy
- Department of Chemical Sciences, University of Napoli Federico II, Complesso Universitario di M.S. Angelo, 80126 Napoli, Italy
- Istituto Nazionale Di Fisica Nucleare, sezione di Napoli, Complesso Universitario di Monte S. Angelo ed. 6, 80126 Napoli, Italia
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3
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Lee JJ, Kang J, Kim C. A low-cost TICT-based staining agent for identification of microplastics: Theoretical studies and simple, cost-effective smartphone-based fluorescence microscope application. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133168. [PMID: 38104521 DOI: 10.1016/j.jhazmat.2023.133168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 11/30/2023] [Accepted: 11/30/2023] [Indexed: 12/19/2023]
Abstract
A novel staining agent, (5-(4-(diethylamino)benzylidene)- 1,3-dimethylpyrimidine-2,4,6(1 H,3 H,5 H)-trione) (DDB) was developed for the effective detection of environmentally harmful microplastics. DDB has competitive cost advantages, namely its facile synthesis and high yield, over Nile Red (NR), which is commonly used for microplastic staining. The unique photophysical properties of DDB, including emissive twisted intramolecular charge transfer (TICT) and aggregation-induced emission (AIE), were corroborated via spectroscopic investigations and density functional theory (DFT) calculations. Notably, DDB demonstrated superior selectivity for staining microplastics (polyethylene (PE), polyurethane (PU), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), and polyethylene terephthalate (PET)) over non-plastic materials in water. Furthermore, modulation of the solvent environment during the staining process yielded distinct fluorescence in both the green and red channels for specific types of plastic with the interplay between locally excited (LE) and TICT states. Treatment with 5% ethanol results in the selective staining of PE and PET with the emission of red fluorescence, whereas treatment with 30% ethanol facilitates the selective staining of PU, PVC, and PET with the emission of green fluorescence. Additionally, DDB could selectively stain microplastics in spiked soil and river water samples. Furthermore, a smartphone-based fluorescence microscope was developed at a cost below $100, validating the effective detection of microplastics stained with the newly synthesized DDB. The outcomes of this research demonstrate the potential of DDB as an economical and efficient agent for selective microplastic detection.
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Affiliation(s)
- Jae Jun Lee
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 01811, South Korea
| | - Jiyun Kang
- Department of Environmental Engineering, Seoul National University of Science and Technology, Seoul 01811, South Korea
| | - Cheal Kim
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 01811, South Korea.
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4
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Knysh I, Villalobos-Castro JDJ, Duchemin I, Blase X, Jacquemin D. Exploring Bethe-Salpeter Excited-State Dipoles: The Challenging Case of Increasingly Long Push-Pull Oligomers. J Phys Chem Lett 2023; 14:3727-3734. [PMID: 37042642 DOI: 10.1021/acs.jpclett.3c00699] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The change of molecular dipole moment induced by photon absorption is key to interpret the measured optical spectra. Except for compact molecules, time-dependent density functional theory (TD-DFT) remains the only theory allowing to quickly predict excited-state dipoles (μES), albeit with a strong dependency on the selected exchange-correlation functional. This Letter presents the first assessment of the performances of the many-body Green's function Bethe-Salpeter equation (BSE) formalism for the evaluation of the μES. We explore increasingly long push-pull oligomers as they present an excited-state nature evolving with system size. This work shows that BSE's μES do present the same evolution with oligomeric length as their CC2 and CCSD counterparts, with a dependency on the starting exchange-correlation functional that is strongly decreased as compared to TD-DFT. This Letter demonstrates that BSE is a valuable alternative to TD-DFT for properties related to the excited-state density and not only for transition energies and oscillator strengths.
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Affiliation(s)
- Iryna Knysh
- Nantes Université, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
| | | | - Ivan Duchemin
- Université Grenoble Alpes, CEA, IRIG-MEM-L Sim, 38054 Grenoble, France
| | - Xavier Blase
- Université Grenoble Alpes, CNRS, Institut NEEL, F-38042 Grenoble, France
| | - Denis Jacquemin
- Nantes Université, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
- Institut Universitaire de France, 75005 Paris, France
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5
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Damour Y, Quintero-Monsebaiz R, Caffarel M, Jacquemin D, Kossoski F, Scemama A, Loos PF. Ground- and Excited-State Dipole Moments and Oscillator Strengths of Full Configuration Interaction Quality. J Chem Theory Comput 2023; 19:221-234. [PMID: 36548519 DOI: 10.1021/acs.jctc.2c01111] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We report ground- and excited-state dipole moments and oscillator strengths (computed in different "gauges" or representations) of full configuration interaction (FCI) quality using the selected configuration interaction method known as Configuration Interaction using a Perturbative Selection made Iteratively (CIPSI). Thanks to a set encompassing 35 ground- and excited-state properties computed in 11 small molecules, the present near-FCI estimates allow us to assess the accuracy of high-order coupled-cluster (CC) calculations including up to quadruple excitations. In particular, we show that incrementing the excitation degree of the CC expansion (from CC with singles and doubles (CCSD) to CC with singles, doubles, and triples (CCSDT) or from CCSDT to CC with singles, doubles, triples, and quadruples (CCSDTQ)) reduces the average error with respect to the near-FCI reference values by approximately 1 order of magnitude.
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Affiliation(s)
- Yann Damour
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Raúl Quintero-Monsebaiz
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Michel Caffarel
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Denis Jacquemin
- Nantes Université, CNRS, CEISAM UMR 6230, F-44000 Nantes, France.,Institut Universitaire de France (IUF), F-75005 Paris, France
| | - Fábris Kossoski
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Anthony Scemama
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Pierre-François Loos
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
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6
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Tiwari SN, Chauhan MS, Kumar A, Sharma D. Ab-initio and molecular dynamics simulation of a discotic liquid crystal in ionic solution. MOLECULAR SIMULATION 2022. [DOI: 10.1080/08927022.2022.2159994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
| | | | - Abhishek Kumar
- Department of Physics, University of Lucknow, Lucknow, India
- Department of Geology, Babasaheb Bhimrao Ambedkar University, Lucknow, India
| | - Dipendra Sharma
- Department of Physics, DDU Gorakhpur University, Gorakhpur, India
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7
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Hussain A, Hadia N, Hessien M, Khera RA, Zahid S, Shehzad RA, Ayub AR, Ayub K, Iqbal J. DFT study of super-halogen (Al7) doped carbon nitride (C2N) and its nonlinear optical properties. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Pandey A, Chaudhary S, Bhat B. The Potential Role of Plastome Copy Number as a Quality Biomarker for Plant Products using Real-time Quantitative Polymerase Chain Reaction. Curr Genomics 2022; 23:289-298. [PMID: 36777877 PMCID: PMC9875542 DOI: 10.2174/1389202923666220513111643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/28/2022] [Accepted: 03/18/2022] [Indexed: 11/22/2022] Open
Abstract
Background: Plastids are plant-specific semi-autonomous self-replicating organelles, containing circular DNA molecules called plastomes. Plastids perform crucial functions, including photosynthesis, stress perception and response, synthesis of metabolites, and storage. The plastome and plastid numbers have been shown to be modulated by developmental stage and environmental stimuli and have been used as a biomarker (identification of plant species) and biosensor (an indicator of abiotic and biotic stresses). However, the determination of plastome sequence and plastid number is a laborious process requiring sophisticated equipment. Methods: This study proposes using plastome copy number (PCN), which can be determined rapidly by real-time quantitative polymerase chain reaction (RT-qPCR) as a plant product quality biomarker. This study shows that the PCN log10 and range PCN log10 values calculated from RT-qPCR data, which was obtained for two years from leaves and lint samples of cotton and seed samples of cotton, rice, soybean, maize, and sesame can be used for assessing the quality of the samples. Results: Observation of lower range PCN log10 values for CS (0.31) and CR (0.58) indicated that the PCN showed little variance from the mean PCN log10 values for CS (3.81) and CR (3.85), suggesting that these samples might have encountered ambient environmental conditions during growth and/ or post-harvest storage and processing. This conclusion was further supported by observation of higher range PCN log10 values for RS (3.09) versus RP (0.05), where rice seeds in the RP group had protective hull covering compared to broken hull-less seeds in the RS group. To further support that PCN is affected by external factors, rice seeds treated with high temperatures and pathogens exhibited lower PCN values when compared to untreated seeds. Furthermore, the range PCN log10 values were found to be high for cotton leaf (CL) and lint (Clt) sample groups, 4.11 and 3.63, respectively, where leaf and lint samples were of different sizes, indicating that leaf samples might be of different developmental stage and lint samples might have been processed differently, supporting that the PCN is affected by both internal and external factors, respectively. Moreover, PCN log10 values were found to be plant specific, with oil containing seeds such as SeS (6.49) and MS (5.05) exhibiting high PCN log10 values compared to non-oil seeds such as SS (1.96). Conclusion: In conclusion, it was observed that PCN log10 values calculated from RT-qPCR assays were specific to plant species and the range of PCN log10 values can be directly correlated to the internal and external factors and, therefore might be used as a potential biomarker for assessing the quality of plant products.
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Affiliation(s)
- Amita Pandey
- 19 University Road, Shriram Institute for Industrial Research, Analytical Science Division - Biology, Molecular Biology Laboratory, New Delhi, India
| | - Shifa Chaudhary
- 19 University Road, Shriram Institute for Industrial Research, Analytical Science Division - Biology, Molecular Biology Laboratory, New Delhi, India
| | - Binu Bhat
- 19 University Road, Shriram Institute for Industrial Research, Analytical Science Division - Biology, Molecular Biology Laboratory, New Delhi, India
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9
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Harry SA, Vemulapalli S, Dudding T, Lectka T. Rational Computational Design of Systems Exhibiting Strong Halogen Bonding Involving Fluorine in Bicyclic Diamine Derivatives. J Org Chem 2022; 87:8413-8419. [PMID: 35658438 DOI: 10.1021/acs.joc.2c00497] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Perhaps the most controversial and rare aspect of the halogen bonding interaction is the potential of fluorine in compounds to serve as a halogen bond donor. In this note, we provide clear and convincing examples of hypothetical molecules in which fluorine is strongly halogen bonding in a metastable state. Of particular note is a polycyclic system inspired by Selectfluor, which has been controversially proposed to engage in halogen bonding.
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Affiliation(s)
- Stefan Andrew Harry
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Srini Vemulapalli
- Department of Chemistry, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Travis Dudding
- Department of Chemistry, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Thomas Lectka
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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10
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Ahmad Bhatti I, Mohsin M, Amjad N, Shehzad RA, Ayub K, Iqbal J, Taha TA. Enhancement of NLO properties of supersalt (Al(BH 4) 3)-doped graphene: a DFT study. J Mol Model 2022; 28:164. [PMID: 35606607 DOI: 10.1007/s00894-022-05141-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 05/02/2022] [Indexed: 11/27/2022]
Abstract
In this work, pure and supersalt-doped graphene is evaluated by the density functional theory (DFT) to explore its optical and electronic properties. The doping of supersalt Al(BH4)3 on graphene reduces the highest occupied molecular orbital and lower unoccupied molecular orbital (HOMO-LUMO) bandgap of graphene@Al(BH4)3 and graphene@2Al(BH4)3 to 3.57 and 3.55 eV from 3.61 eV. The improvement in the optoelectronic properties of the supersalt Al(BH4)3-doped graphene is determined by the upshift of UV absorption peak and dipole moment. Polarizability (α) values of graphene@Al(BH4)3, and graphene@2Al(BH4)3 increase to 14% and 26% in the comparison of pure graphene. The first hyperpolarizability (βo) is increased from 0.44 (graphene) to 1295.4 au in graphene@2Al(BH4)3. Our findings suggest that Al(BH4)3-doped graphene could be an effective method for making graphene an efficient nonlinear optical material.
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Affiliation(s)
- Ijaz Ahmad Bhatti
- Department of Chemistry, University of Agriculture, Faisalabad, 38000, Pakistan.
| | - Muhammad Mohsin
- Department of Chemistry, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Nyla Amjad
- Department of Chemistry, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Rao Aqil Shehzad
- Department of Chemistry, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Khurshid Ayub
- Department of Chemistry, COMSAT University, Abbottabad Campus, Abbottabad, 22060, KPK, Pakistan
| | - Javed Iqbal
- Department of Chemistry, University of Agriculture, Faisalabad, 38000, Pakistan.
- Punjab Bio-Energy Institute, University of Agriculture, Faisalabad, 38000, Pakistan.
| | - T A Taha
- Physics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka, Saudi Arabia
- Physics and Engineering Mathematics Department, Faculty of Electronic Engineering, Menoufia University, Menouf, 32952, Egypt
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11
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Lv M, Li Z, Han C, Li W. New Insights into the Recognition and Sensing Mechanism of a H 2S Fluorescent Probe: A Theoretical Perspective. J Phys Chem A 2022; 126:2788-2793. [PMID: 35502941 DOI: 10.1021/acs.jpca.2c00782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
H2S is an important signal molecule in living systems and related with many physiological processes and diseases. Rapid detection of H2S, hence, is important for studying physiological processes and early diagnosis of diseases. Deep insight into the sensing mechanism is significant and inspiring for the design and modification of high-efficiency H2S probes. The current study has theoretically investigated the recognition and fluorescence mechanism of a newly reported high-efficiency H2S probe. The recognition mechanism is determined to be the reaction between the probe and HS- anion, the rationality of which is further confirmed from the fluorescence property of the recognition product. The non-fluorescence property of the probe attributes to a photoinduced electron transfer process, and the turn-on fluorescence upon exposure to H2S exhibits an intramolecular charge transfer property according to frontier molecular orbital analysis.
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Affiliation(s)
- Meiheng Lv
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China.,State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Zhengbo Li
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Cong Han
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Wenze Li
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
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12
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Liang J, Feng X, Hait D, Head-Gordon M. Revisiting the Performance of Time-Dependent Density Functional Theory for Electronic Excitations: Assessment of 43 Popular and Recently Developed Functionals from Rungs One to Four. J Chem Theory Comput 2022; 18:3460-3473. [PMID: 35533317 DOI: 10.1021/acs.jctc.2c00160] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
In this paper, the performance of more than 40 popular or recently developed density functionals is assessed for the calculation of 463 vertical excitation energies against the large and accurate QuestDB benchmark set. For this purpose, the Tamm-Dancoff approximation offers a good balance between computational efficiency and accuracy. The functionals ωB97X-D and BMK are found to offer the best performance overall with a root-mean square error (RMSE) of around 0.27 eV, better than the computationally more demanding CIS(D) wave function method with a RMSE of 0.36 eV. The results also suggest that Jacob's ladder still holds for time-dependent density functional theory excitation energies, though hybrid meta generalized-gradient approximations (meta-GGAs) are not generally better than hybrid GGAs. Effects of basis set convergence, gauge invariance correction to meta-GGAs, and nonlocal correlation (VV10) are also studied, and practical basis set recommendations are provided.
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Affiliation(s)
- Jiashu Liang
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California at Berkeley, Berkeley, California 94720, United States
| | - Xintian Feng
- Q-Chem Inc., Pleasanton, California 94588, United States
| | - Diptarka Hait
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California at Berkeley, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Martin Head-Gordon
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California at Berkeley, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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13
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Mondal S, Powar NS, Paul R, Kwon H, Das N, Wong BM, In SI, Mondal J. Nanoarchitectonics of Metal-Free Porous Polyketone as Photocatalytic Assemblies for Artificial Photosynthesis. ACS APPLIED MATERIALS & INTERFACES 2022; 14:771-783. [PMID: 34962379 DOI: 10.1021/acsami.1c18626] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The main component of natural gas is methane, whose combustion contributes to global warming. As such, sustainable, energy-efficient, nonfossil-based methane production is needed to satisfy current energy demands and chemical feedstocks. In this article, we have constructed a metal-free porous polyketone (TPA-DPA PPK) with donor-acceptor (D-A) groups with an extensive π-conjugation by facile Friedel-Crafts acylation reaction between triphenylamine (TPA) and pyridine-2,6-dicarbonyl dichloride (DPA). TPA-DPA PPK is a metal-free catalyst for visible-light-driven CO2 photoreduction to CH4, which can be used as a solar fuel in the absence of any cocatalyst and sacrificial agent. CH4 production (152.65 ppm g-1) is ∼5 times greater than that of g-C3N4 under the same test conditions. Charge-density difference plots from excited-state time-dependent density functional theory (TD-DFT) calculations indicate a depletion and accumulation of charge density among the donor/acceptor functional groups upon photoexcitation. Most notably, binding energies from DFT demonstrate that H2O is more strongly bound with the pyridinic nitrogen group than CO2, which shed insight into mechanistic pathways for photocatalytic CO2 reduction.
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Affiliation(s)
- Sujan Mondal
- Amity Institute of Nanotechnology, Amity University, Bhanumati Road, AA II, Newtown, Kolkata, West Bengal 700135, India
| | - Niket S Powar
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu 42988, Republic of Korea
| | - Ratul Paul
- Catalysis & Fine Chemicals Division, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500 007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Hyuna Kwon
- Department of Chemical & Environmental Engineering, Materials Science & Engineering Program, and Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Nitumani Das
- Catalysis & Fine Chemicals Division, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500 007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Bryan M Wong
- Department of Chemical & Environmental Engineering, Materials Science & Engineering Program, and Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Su-Il In
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu 42988, Republic of Korea
| | - John Mondal
- Catalysis & Fine Chemicals Division, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500 007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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14
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Wei Z, Zuo T, Jiang S, Qi F, Yang M, Meng L, Lu CZ. Theoretically elucidating high photoluminescence performance of dimethylacridan-based blue-color thermally activated delayed fluorescent materials. NEW J CHEM 2022. [DOI: 10.1039/d1nj05251a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Based on first-principles methods, we comprehensively quantify the luminous quantum efficiencies and related photophysical process rates of dimethylacridan-based blue-color TADF emitters.
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Affiliation(s)
- Zhuangzhuang Wei
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Tao Zuo
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Shanshan Jiang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Fangfang Qi
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Mingxue Yang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Lingyi Meng
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Can-Zhong Lu
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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15
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Wei Z, Lin S, Zuo T, Li Q, Jiang S, Qi F, Yang M, Gu J, Meng L, Lu CZ. Thermally activated delayed fluorescence materials with aggregation-induced emission properties: a QM/MM study. Phys Chem Chem Phys 2021; 23:25789-25796. [PMID: 34766607 DOI: 10.1039/d1cp04190h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organic molecules with thermally activated delayed fluorescence (TADF) and aggregation induced emission (AIE) properties have attracted increasing research interest due to their great potential applications in organic light emitting diodes (OLEDs), especially for those with multicolor mechanochromic luminescence (MCL) features. Theoretical research on the luminescence characteristics of organic TADF emitters based on the aggregation states is highly desired to quantify the relationship between the TADF properties and aggregation states. In this work, we study the 4,4'-(6-(9,9-dimethylacridine-10(9H)-yl)quinoline-2,3-dibenzonitrile (DMAC-CNQ) emitter with TADF and AIE properties, and calculate the photophysical properties in gas, solid and amorphous states by using the quantum mechanics and molecular mechanics (QM/MM) method. Our simulations demonstrate that the aggregation states enhance obviously the reverse intersystem crossing rates and transition dipole moments of the DMAC-CNQ emitter, and suppress the non-radiative rates from the lowest excited singlet state (S1) to ground state (S0). Specifically, the molecular stacking of DMAC-CNQ in solid phases can mainly restrict the geometric torsion of the DMAC moiety for decreasing non-radiative decay rates, and the torsion of the CNQ moiety for increasing the reverse intersystem crossing rates. As a result, the calculated fluorescence efficiencies of the DMAC-CNQ emitter in the crystal and amorphous states are 67% and 26% respectively, and in good agreement with the experimental results.
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Affiliation(s)
- Zhuangzhuang Wei
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. .,College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China.,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Shiyun Lin
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Tao Zuo
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. .,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Qikai Li
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Shanshan Jiang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. .,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Fangfang Qi
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. .,College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China.,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Mingxue Yang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. .,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Junjing Gu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Lingyi Meng
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. .,College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China.,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Can-Zhong Lu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. .,College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China.,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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16
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Gester R, Torres A, da Cunha AR, Andrade-Filho T, Manzoni V. Theoretical study of thieno[3,4-b]pyrazine derivatives with enhanced NLO response. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138976] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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17
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Kiran R, Khera RA, Khan AU, Ayoub A, Iqbal N, Ayub K, Iqbal J. Study of nonlinear optical properties of superhalogen and superalkali doped phosphorene. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130348] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Coppola F, Cimino P, Raucci U, Chiariello MG, Petrone A, Rega N. Exploring the Franck-Condon region of a photoexcited charge transfer complex in solution to interpret femtosecond stimulated Raman spectroscopy: excited state electronic structure methods to unveil non-radiative pathways. Chem Sci 2021; 12:8058-8072. [PMID: 34194695 PMCID: PMC8208128 DOI: 10.1039/d1sc01238j] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/27/2021] [Indexed: 01/12/2023] Open
Abstract
We present electronic structure methods to unveil the non-radiative pathways of photoinduced charge transfer (CT) reactions that play a main role in photophysics and light harvesting technologies. A prototypical π-stacked molecular complex consisting of an electron donor (1-chloronaphthalene, 1ClN) and an electron acceptor (tetracyanoethylene, TCNE) was investigated in dichloromethane solution for this purpose. The characterization of TCNE:π:1ClN in both its equilibrium ground and photoinduced low-lying CT electronic states was performed by using a reliable and accurate theoretical-computational methodology exploiting ab initio molecular dynamics simulations. The structural and vibrational time evolution of key vibrational modes is found to be in excellent agreement with femtosecond stimulated Raman spectroscopy experiments [R. A. Mathies et al., J. Phys. Chem. A, 2018, 122, 14, 3594], unveiling a correlation between vibrational fingerprints and electronic properties. The evaluation of nonadiabatic coupling matrix elements along generalized normal modes has made possible the interpretation on the molecular scale of the activation of nonradiative relaxation pathways towards the ground electronic state. In particular, two low frequency vibrational modes such as the out of plane bending and dimer breathing and the TCNE central C[double bond, length as m-dash]C stretching play a prominent role in relaxation phenomena from the electronic CT state to the ground state one.
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Affiliation(s)
- Federico Coppola
- Department of Chemical Sciences, University of Napoli Federico II, Complesso Universitario di M.S. Angelo via Cintia Napoli 80126 Italy
| | - Paola Cimino
- Department of Pharmaceutical Sciences, University of Salerno Salerno 84084 Italy
| | - Umberto Raucci
- Department of Chemical Sciences, University of Napoli Federico II, Complesso Universitario di M.S. Angelo via Cintia Napoli 80126 Italy
| | - Maria Gabriella Chiariello
- Department of Chemical Sciences, University of Napoli Federico II, Complesso Universitario di M.S. Angelo via Cintia Napoli 80126 Italy
| | - Alessio Petrone
- Department of Chemical Sciences, University of Napoli Federico II, Complesso Universitario di M.S. Angelo via Cintia Napoli 80126 Italy
| | - Nadia Rega
- Department of Chemical Sciences, University of Napoli Federico II, Complesso Universitario di M.S. Angelo via Cintia Napoli 80126 Italy
- Centro Interdipartimentale di Ricerca sui Biomateriali (CRIB) Piazzale Tecchio Napoli I-80125 Italy
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19
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Sarkar R, Boggio-Pasqua M, Loos PF, Jacquemin D. Benchmarking TD-DFT and Wave Function Methods for Oscillator Strengths and Excited-State Dipole Moments. J Chem Theory Comput 2021; 17:1117-1132. [DOI: 10.1021/acs.jctc.0c01228] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | - Martial Boggio-Pasqua
- Laboratoire de Chimie et Physique Quantiques, Université de Toulouse, CNRS, UPS, 31400 Toulouse, France
| | - Pierre-François Loos
- Laboratoire de Chimie et Physique Quantiques, Université de Toulouse, CNRS, UPS, 31400 Toulouse, France
| | - Denis Jacquemin
- Université de Nantes, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
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20
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Kałka AJ, Brela MZ, Turek AM. Unravelling the nature of a toluene-fumaronitrile complex. Phys Chem Chem Phys 2021; 23:16128-16141. [PMID: 34296231 DOI: 10.1039/d1cp01895g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this research, the occurrence and anomalous increase of an additional absorption band observed in the spectrum of fumaronitrile dissolved in toluene are explained and characterized. The formation of a stable ground-state complex between these two molecules is evidenced by both experimental and theoretical studies. TD-DFT calculations show that the presence of an unexpected signal in the absorption spectra originates from the photoinduced intermolecular charge-transfer process occurring within this system. The mechanism and the efficiency of the adduct formation were investigated using both spectral measurements (UV-Vis, IR) and quantum-mechanical calculations (DFT). The influence of the solvent polarity on the complex stability was also evaluated. Since the forces responsible for the adduct formation turn out to be of a rather weak, dispersive character, the related equilibrium stability constant is relatively low and becomes even lower with the increase in solvent polarity. Finally, the system was analyzed for the expected fluorescence emission of the resulting complex, but none was observed.
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Affiliation(s)
- Andrzej J Kałka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland.
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21
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Kanlayakan N, Kungwan N. Molecular design of amino-type hydrogen-bonding molecules for excited-state intramolecular proton transfer (ESIPT)-based fluorescent probe using the TD-DFT approach. NEW J CHEM 2021. [DOI: 10.1039/d1nj01277k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A molecular screening of a new series of NH-type molecules for ESIPT-based fluorescent probes has been carried out using time-dependent density. functional theory.
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Affiliation(s)
| | - Nawee Kungwan
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Thailand
- Center of Excellence in Materials Science and Technology
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22
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Popoola SA, Al-Harbi MHM, Al-Rashidi AH, Almarwani MSA, Almohammedi AR, Logunleko AO, Al-Saadi AA. DFT evaluation of the effects of OH, NH2 and Br substituents on the properties of 2,2′-bipyridine derivatives. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2020. [DOI: 10.1080/16583655.2020.1843872] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Saheed A. Popoola
- Department of Chemistry, Islamic University of Madinah, Madinah, Saudi Arabia
| | | | - Ahmed H. Al-Rashidi
- Department of Chemistry, Islamic University of Madinah, Madinah, Saudi Arabia
| | | | | | | | - Abdulaziz A. Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
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23
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Alipour M, Damiri S. Unveiling the role of short-range exact-like exchange in the optimally tuned range-separated hybrids for fluorescence lifetime modeling. J Chem Phys 2020; 152:204301. [PMID: 32486652 DOI: 10.1063/5.0007767] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
We propose and validate several variants of the optimally tuned range-separated hybrid functionals (OT-RSHs) including different density functional approximations for predicting the fluorescence lifetimes of different categories of fluorophores within the time-dependent density functional theory (TD-DFT) framework using both the polarizable continuum and state-specific solvation models. Our main idea originates from performing the optimal tuning in the presence of a contribution of the exact-like exchange at the short-range part, which, in turn, leads to the small values of the range-separation parameter, and computing the fluorescence lifetimes using the models including no or small portions of the short-range exact-like exchange. Particular attention is also paid to the influence of the geometries of emitters on fluorescence lifetime computations. It is shown that our developed OT-RSHs along with the polarizable continuum model can be considered as the promising candidates within the TD-DFT framework for the prediction of fluorescence lifetimes for various fluorophores. We find that the proposed models not only outperform their standard counterparts but also provide reliable data better than or comparable to the conventional hybrid functionals with both the fixed and interelectronic distance-dependent exact-like exchanges. Furthermore, it is also revealed that when the excited state geometries come into play, more accurate descriptions of the fluorescence lifetimes can be achieved. Hopefully, our findings can give impetus for future developments of OT-RSHs for computational modeling of other characteristics in fluorescence spectroscopy as well as for verification of the related experimental observations.
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Affiliation(s)
- Mojtaba Alipour
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71946-84795, Iran
| | - Samaneh Damiri
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71946-84795, Iran
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24
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Liu JT, Hase H, Taylor S, Salzmann I, Forgione P. Approaching the Integer‐Charge Transfer Regime in Molecularly Doped Oligothiophenes by Efficient Decarboxylative Cross‐Coupling. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jiang Tian Liu
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
| | - Hannes Hase
- Department of Physics Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
| | - Sarah Taylor
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
| | - Ingo Salzmann
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
- Department of Physics Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
- Centre for Research in Molecular Modeling (CERMM) Centre for NanoScience Research (CeNSR) Concordia University 7141 rue Sherbrooke O. Montreal QC H4B 1R6 Canada
| | - Pat Forgione
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
- Center for Green Chemistry and Catalysis McGill University 801 rue Sherbrooke O. Montréal QC H3A 0B8 Canada
- Centre for Research in Molecular Modeling (CERMM) Centre for NanoScience Research (CeNSR) Concordia University 7141 rue Sherbrooke O. Montreal QC H4B 1R6 Canada
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25
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Liu JT, Hase H, Taylor S, Salzmann I, Forgione P. Approaching the Integer-Charge Transfer Regime in Molecularly Doped Oligothiophenes by Efficient Decarboxylative Cross-Coupling. Angew Chem Int Ed Engl 2020; 59:7146-7153. [PMID: 31961982 DOI: 10.1002/anie.201914458] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Indexed: 01/08/2023]
Abstract
A library of symmetrical linear oligothiophene was prepared employing decarboxylative cross-coupling reaction as the key transformation. Thiophene potassium carboxylate salts were used as cross-coupling partners without the need of co-catalyst, base, or additives. This method demonstrates complete chemoselectivity and is a comprehensive greener approach compared to the existing methods. The modularity of this approach is demonstrated with the preparation of discreet oligothiophenes with up to 10 thiophene repeat units. Symmetrical oligothiophenes are prototypical organic semiconductors where their molecular electrical doping as a function of the chain length can be assessed spectroscopically. An oligothiophene critical length for integer charge transfer was observed to be 10 thiophene units, highlighting the potential use of discrete oligothiophenes as doped conduction or injection layers in organic electronics applications.
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Affiliation(s)
- Jiang Tian Liu
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada
| | - Hannes Hase
- Department of Physics, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada
| | - Sarah Taylor
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada
| | - Ingo Salzmann
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada.,Department of Physics, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada.,Centre for Research in Molecular Modeling (CERMM), Centre for NanoScience Research (CeNSR), Concordia University, 7141 rue Sherbrooke O., Montreal, QC, H4B 1R6, Canada
| | - Pat Forgione
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada.,Center for Green Chemistry and Catalysis, McGill University, 801 rue Sherbrooke O., Montréal, QC, H3A 0B8, Canada.,Centre for Research in Molecular Modeling (CERMM), Centre for NanoScience Research (CeNSR), Concordia University, 7141 rue Sherbrooke O., Montreal, QC, H4B 1R6, Canada
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26
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Fractional occupation numbers and self‐interaction correction‐scaling methods with the Fermi‐Löwdin orbital self‐interaction correction approach. J Comput Chem 2020; 41:1200-1208. [DOI: 10.1002/jcc.26168] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 01/19/2020] [Indexed: 11/07/2022]
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27
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Comprehensive evaluation of the effect of various exchange correlation functionals on the optical properties of oligothiophenes. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2019.112667] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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28
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Dokmaisrijan S, Kungwan N. LC-BLYP Calculations of the Structures and Photophysical Properties of [1,3]Thiazolo[4,5- b]pyrazine Derivatives in Cyclohexane and Methanol. J Phys Chem A 2019; 123:10685-10693. [PMID: 31769683 DOI: 10.1021/acs.jpca.9b09074] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Applications of the B3LYP and LC-BLYP functionals with the 6-311+G(d,p) basis set for predicting absorption and fluorescence spectra of benzothiazole and 11 [1,3]thiazolo[4,5-b]pyrazine (TPy) derivatives in implicit solvents (cyclohexane and methanol) were tested and compared with experimental results. The damping parameter of LC-BLYP was tuned for simulating absorption and fluorescence spectra of each compound. For the 11 TPy derivatives, four and seven compounds are small- and medium-sized TPy derivatives, respectively. From this calculation, TD-B3LYP can be used to simulate the absorption spectra of the small-sized compounds in cyclohexane and methanol, but it gives poor results for the fluorescence spectra in cyclohexane and methanol. Contrarily, the LC-BLYP functional with the optimal damping parameter can reproduce the absorption and fluorescence spectra of all compounds in cyclohexane and methanol. The values of the damping parameter of LC-BLYP depend on the types of substituents and solvents. Moreover, the conformations of the compounds do not affect the spectra, and the molecular size and molecular dipole moment do not affect the damping parameter. In addition, types and the number of substitutions attached to the phenyl rings of TPy as well as solvent polarity play the key roles in the long-wavelength fluorescence emission and fluorescence brightness of the compounds. The intramolecular charge transfer of the compounds containing the -NMe2 and -CN groups is predominant in methanol, resulting in a large Stokes shift and oscillator strength.
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29
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Muhammad S, Shehzad RA, Iqbal J, Al-Sehemi AG, Saravanabhavan M, Khalid M. Benchmark study of the linear and nonlinear optical polarizabilities in proto-type NLO molecule of para-nitroaniline. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2019. [DOI: 10.1142/s0219633619500305] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In the present investigation, for the first time, we have performed a thorough study about different functionals and basis sets for linear and nonlinear optical (NLO) properties of para-nitroaniline ([Formula: see text]-NA), which is considered as proto-type NLO molecule, among organic NLO materials. There is a dire need of such data base for [Formula: see text]-NA because many investigators are using such values of [Formula: see text]-NA for comparative analysis. A range of different functionals including HF, BLYP, PW91, PBE, B3LYP, M06, M06-2X, PBE0, BHandHLYP, CAM-B3LYP, LC-BLYP, and B3LYP-D3 are applied in conjugation with several commonly basis sets such as 6-31G*, 6-311G*, 6-311G**, 6-311+G**, cc-pVDZ, and cc-pVTZ. A variety of functional and basis sets combinations are calculated and graphically compared with each other. The calculated total dipole moment for the [Formula: see text]-NA is found to be 6.79[Formula: see text]D which is quite closer to experimentally determined value. The lowest calculated value for linear isotropic polarizability at HF/6-31G* level of theory is [Formula: see text] esu while higher values observed with remaining all methods especially 14% polarizability increases in presence of basis set with diffuse functions and similar trend of variation is also observed in linear anisotropic polarizability. Similarly, the calculated value of frequency dependent second-order polarizability is found to be [Formula: see text] esu at PBE0/6-311+G** level of theory which is quite closer to experimental value of [Formula: see text] esu. A comparison between the calculated and experimental results shows good agreement among geometries, dipole moments and NLO polarizabilities for [Formula: see text]-NA. Moreover, the frontier molecular orbital (FMO) and electron density difference map (EDDM) analysis along with density of state (DOS) plots are also presented to get more physical intuitions into the structure–property relationship and electronic communications between terminal accepter and donor groups through [Formula: see text]-conjugation. The present investigation provides benchmark data including various commonly used functionals and basis sets for the calculation of NLO properties of [Formula: see text]-NA. Thus, the present investigation will put straight several future studies when it comes to comparative NLO study of organic materials.
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Affiliation(s)
- Shabbir Muhammad
- Department of Physics, College of Science, King Khalid University, Abha 61413, P.O. Box 9004, Saudi Arabia
| | - Rao Aqil Shehzad
- Department of Chemistry, University of Agriculture Faisalabad, 38000, Faisalabad, Pakistan
| | - Javed Iqbal
- Department of Chemistry, University of Agriculture Faisalabad, 38000, Faisalabad, Pakistan
| | - Abdullah G. Al-Sehemi
- Department of Chemistry, College of Science, King Khalid University, Abha 61413, P.O. Box 9004, Saudi Arabia
| | - M. Saravanabhavan
- Post-Graduate and Research Department of Chemistry, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore 641 020, Tamil Nadu, India
| | - Muhammad Khalid
- Department of Chemistry, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan
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30
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Xavier S, Narayanan S, Anjali C, Sreekumar K. Theoretical design, synthesis and studies on the solvatochromic behaviour of low band gap phenylenevinylene based copolymers. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.01.071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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31
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Manzhos S, Pal A, Chen Y, Giorgi G. Effect of organic cation states on electronic properties of mixed organic–inorganic halide perovskite clusters. Phys Chem Chem Phys 2019; 21:8161-8169. [DOI: 10.1039/c9cp01348b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We study the effect of organic cation-centered states in mixed organic–inorganic halide perovskite clusters on the bandstructure and optical properties.
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Affiliation(s)
- Sergei Manzhos
- Department of Mechanical Engineering
- National University of Singapore
- Block EA #07-08
- 9 Engineering Drive 1
- Singapore
| | - Amrita Pal
- Department of Mechanical Engineering
- National University of Singapore
- Block EA #07-08
- 9 Engineering Drive 1
- Singapore
| | - Yingqian Chen
- Department of Mechanical Engineering
- National University of Singapore
- Block EA #07-08
- 9 Engineering Drive 1
- Singapore
| | - Giacomo Giorgi
- Department of Civil & Environmental Engineering
- The University of Perugia
- Via G. Duranti, 93
- I-06125 Perugia
- Italy
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32
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Xu L, Kumar A, Wong BM. Linear polarizabilities and second hyperpolarizabilities of streptocyanines: Results from broken‐Symmetry DFT and new CCSD(T) benchmarks. J Comput Chem 2018; 39:2350-2359. [DOI: 10.1002/jcc.25519] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 05/06/2018] [Accepted: 06/14/2018] [Indexed: 01/29/2023]
Affiliation(s)
- Lihua Xu
- Department of Chemical & Environmental Engineering, Materials Science & Engineering Program and Department of Physics & Astronomy University of California‐Riverside Riverside California 92521
| | - Anshuman Kumar
- Department of Chemical & Environmental Engineering, Materials Science & Engineering Program and Department of Physics & Astronomy University of California‐Riverside Riverside California 92521
| | - Bryan M. Wong
- Department of Chemical & Environmental Engineering, Materials Science & Engineering Program and Department of Physics & Astronomy University of California‐Riverside Riverside California 92521
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33
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Anis M, Shkir M, Baig M, Ramteke S, Muley G, AlFaify S, Ghramh H. Experimental and computational studies of L -tartaric acid single crystal grown at optimized pH. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.05.073] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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34
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Zhou B, Hu Z, Jiang Y, Zhong C, Sun Z, Sun H. Theoretical exploitation of acceptors based on benzobis(thiadiazole) and derivatives for organic NIR-II fluorophores. Phys Chem Chem Phys 2018; 20:19759-19767. [PMID: 29998265 DOI: 10.1039/c8cp03135e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Small-molecule dyes with fluorescence emission in the second near-infrared (NIR-II) region (1000-1700 nm) have attracted considerable attention in the biomedical and bioimaging fields due to their greater imaging depths, better spatial resolution, and higher signal-to-background ratios. However, currently reported organic NIR-II fluorophores are still limited and there is great demand to develop other novel NIR-II fluorophores besides benzobisthiadiazole (BBT)-based fluorophores. More importantly, there is a lack of an appropriate level of theory capable of providing both efficient and accurate predictions of the electronic structures of organic NIR-II fluorophores. In this work, successful application of time-dependent density functional theory (TDDFT) using optimally-tuned range-separated functionals for calculations of both absorption and fluorescence spectral properties has been demonstrated, compared with the available experimental data. A series of thiadiazole-based acceptors (A) and derivatives based on the D-A-D skeleton are designed coupled with the triphenylamine donor (D). The structure-property relationships for these fluorophores are thus revealed by analyzing their ground (S0) and excited (S1) state geometries, frontier molecular orbitals (HOMO and LUMO), HOMO-LUMO energy gaps, oscillator strengths, hole-electron distributions and fluorescence wavelengths. It is suggested that the existence of a hypervalent structure leading to a much lower LUMO level and accompanying significant hole-electron separation plays a key role in the red-shift of fluorescence emission in the NIR-II region. In addition, the substitution of BBT oligomers and analogues as acceptor cores is an efficient way to achieve both red-shifted fluorescence wavelengths and enhanced oscillator strengths. The present work provides a reliable and efficient theoretical tool for predicting the related electronic and spectral properties of organic fluorophores and future screening out of potential candidates for excellent NIR-II molecular fluorophores.
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Affiliation(s)
- Bin Zhou
- State Key Laboratory of Precision Spectroscopy, School of Physics and Materials Science, East China Normal University, Shanghai 200062, P. R. China.
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35
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Würdemann R, Walter M. Charge Transfer Excitations with Range Separated Functionals Using Improved Virtual Orbitals. J Chem Theory Comput 2018; 14:3667-3676. [DOI: 10.1021/acs.jctc.8b00238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rolf Würdemann
- Freiburger Materialforschungszentrum, Universität Freiburg, Stefan-Meier-Straße 21, D-79104 Freiburg, Germany
| | - Michael Walter
- Freiburger Zentrum für interaktive Werkstoffe und bioinspirierte Technologien, Universität Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
- Fraunhofer IWM, Wöhlerstrasse 11, D-79108 Freiburg, Germany
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36
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Patil PS, Maidur SR, Shkir M, AlFaify S, Ganesh V, Krishnakanth KN, Rao SV. Crystal growth and characterization of second- and third-order nonlinear optical chalcone derivative: (2E)-3-(5-bromo-2-thienyl)-1-(4-nitrophenyl)prop-2-en-1-one. J Appl Crystallogr 2018. [DOI: 10.1107/s1600576718006386] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Experimental and computational studies of linear and nonlinear optical (NLO) properties of (2E)-3-(5-bromo-2-thienyl)-1-(4-nitrophenyl)prop-2-en-1-one (5B2SNC) single crystals are reported. Good-quality and large-sized single crystals of 5B2SNC were successfully grown and characterized by powder X-ray diffraction and high-resolution X-ray diffractometry techniques. 5B2SNC was found to crystallize in the monoclinic noncentrosymmetric space group Cc and possesses moderately good crystalline perfection. The linear optical properties were investigated using the absorption spectrum, which reveals a direct optical band gap of 3.1 eV. The thermal stability was studied with thermogravimetric analysis/differential thermal analysis. The powder second harmonic generation efficiency was evaluated by the Kurtz and Perry method, and 5B2SNC was found to be 26 times more efficient than urea standard. Third-order NLO properties were studied by the z-scan technique with a femtosecond laser. The second hyperpolarizability was obtained to be ∼1.45 × 10−31 e.s.u. The molecule reveals a strong reverse saturation absorption and negative nonlinear refraction. The molecule exhibited good optical limiting properties, and its limiting threshold was measured to be ∼3.2 mJ cm−2. In addition, static electric dipole moments, linear polarizabilities, and first- and second-order hyperpolarizabilities were calculated by density functional theory (DFT). Highest occupied molecular orbital/lowest unoccupied molecular orbital band gaps were also evaluated by DFT calculations. The experimental and theoretical results showed that 5B2SNC exhibits excellent second- and third-order nonlinear optical properties.
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37
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Alipour M. Dipole moments of molecules with multi-reference character from optimally tuned range-separated density functional theory. J Comput Chem 2018; 39:1508-1516. [PMID: 29635817 DOI: 10.1002/jcc.25221] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 03/13/2018] [Accepted: 03/16/2018] [Indexed: 01/31/2023]
Abstract
Dipole moment is the first nonzero moment of the charge density of neutral systems. If a density functional theory (DFT) method is able to yield accurate dipole moments, it should first provide an accurate geometry and then predict a reliable charge distribution for that geometry. In this respect, recent literatures have revealed that most DFT approximations work considerably better for single-reference molecules with respect to multi-reference ones, as may be expected from this fact that DFT utilizes a single configuration state function as reference function to represent the density. Putting together, it seems that as compared to the single-reference systems, situation is slightly more involved in the case of dipole moment calculations of multi-reference molecules. Effort to address this latter issue constitutes the cornerstone of the present investigation. To this end, we rely on a different approach where the new optimally (nonempirically) tuned range-separated hybrid density functionals (OT-RSHs) without invoking any empirical fitting are proposed for predicting the dipole moments of multi-reference molecules containing both main-group elements and transition metals. We have scanned the controlling factors of OT-RSHs like short- and long-range exchange contributions and range-separation parameter with the aim of deriving the best performing models for the purpose. The obtained results unveil that, as compared to the standard range-separated density functionals, our newly developed OT-RSHs not only give an improved description on the dipole moments of the molecules with multi-reference character but also the quality of their predictions is better than other conventional and recently proposed DFT approximations. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Mojtaba Alipour
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, 71946-84795, Iran
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38
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Investigation of the Intermolecular Hydrogen Bonding Effects on the Intramolecular Charge Transfer Process of Coumarin 340 in Tetrahydrofuran Solvent. J CLUST SCI 2018. [DOI: 10.1007/s10876-018-1371-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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39
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Sen R, Singh SP, Johari P. Strategical Designing of Donor–Acceptor–Donor Based Organic Molecules for Tuning Their Linear Optical Properties. J Phys Chem A 2018; 122:492-504. [DOI: 10.1021/acs.jpca.7b07381] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raja Sen
- Department of Physics, School
of Natural Sciences, Shiv Nadar University, Greater Noida, Gautam Buddha Nagar, UP 201 314, India
| | - Samarendra P. Singh
- Department of Physics, School
of Natural Sciences, Shiv Nadar University, Greater Noida, Gautam Buddha Nagar, UP 201 314, India
| | - Priya Johari
- Department of Physics, School
of Natural Sciences, Shiv Nadar University, Greater Noida, Gautam Buddha Nagar, UP 201 314, India
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40
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Anderson LN, Aquino FW, Raeber AE, Chen X, Wong BM. Halogen Bonding Interactions: Revised Benchmarks and a New Assessment of Exchange vs Dispersion. J Chem Theory Comput 2017; 14:180-190. [DOI: 10.1021/acs.jctc.7b01078] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Lindsey N. Anderson
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California-Riverside, Riverside, California 92521, United States
| | - Fredy W. Aquino
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California-Riverside, Riverside, California 92521, United States
| | - Alexandra E. Raeber
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California-Riverside, Riverside, California 92521, United States
| | - Xi Chen
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California-Riverside, Riverside, California 92521, United States
| | - Bryan M. Wong
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California-Riverside, Riverside, California 92521, United States
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41
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Milad R, Essalah K, Abderrabba M. Optoelectronic and conductivity of ᴫ-conjugated polymers based on phenylenevinylene, 1,3,4-thiadiazole and thiophene: Suitable candidates for n-type organic semiconductors. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3750] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rim Milad
- Laboratoire Matériaux, Molécules et applications; Institut Préparatoire aux Etudes Scientifiques et Techniques; BP La Marsa Tunisia
- Faculté de Sciences de Bizerte (FSB); Université de Carthage; Bizerte Tunisia
| | - Khaled Essalah
- Unité de Recherche en Sciences Fondamentales et Didactique, Equipe de Chimie Théorique et Réactivité (UR14ES10); Institut Préparatoire aux Etudes d'Ingénieurs d'El Manar IPEIM, Université Tunis El Manar; Tunis Tunisia
| | - Manef Abderrabba
- Laboratoire Matériaux, Molécules et applications; Institut Préparatoire aux Etudes Scientifiques et Techniques; BP La Marsa Tunisia
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42
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Anderson LN, Oviedo MB, Wong BM. Accurate Electron Affinities and Orbital Energies of Anions from a Nonempirically Tuned Range-Separated Density Functional Theory Approach. J Chem Theory Comput 2017; 13:1656-1666. [DOI: 10.1021/acs.jctc.6b01249] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lindsey N. Anderson
- Department of Chemical and
Environmental Engineering and Materials Science and Engineering Program, University of California−Riverside, Riverside, California 92521, United States
| | - M. Belén Oviedo
- Department of Chemical and
Environmental Engineering and Materials Science and Engineering Program, University of California−Riverside, Riverside, California 92521, United States
| | - Bryan M. Wong
- Department of Chemical and
Environmental Engineering and Materials Science and Engineering Program, University of California−Riverside, Riverside, California 92521, United States
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43
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Gogoi P, Mohan U, Borpuzari MP, Boruah A, Baruah SK. UV–Vis spectroscopy and density functional study of solvent effect on the charge transfer band of the n → σ* complexes of 2-Methylpyridine and 2-Chloropyridine with molecular iodine. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.11.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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44
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Shkir M, Patil PS, Arora M, AlFaify S, Algarni H. An experimental and theoretical study on a novel donor-π-acceptor bridge type 2, 4, 5-trimethoxy-4'-chlorochalcone for optoelectronic applications: A dual approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 173:445-456. [PMID: 27710809 DOI: 10.1016/j.saa.2016.09.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 09/01/2016] [Accepted: 09/17/2016] [Indexed: 06/06/2023]
Abstract
In this article the authors aim is to investigate and analyze the various key parameters of an organic D-π-A type novel nonlinear optical material 2, 4, 5-trimethoxy-4'-chlorochalcone (2,4,5TMCC) through experimental and quantum chemical studies. The Claisen-Schmidt condensation reaction mechanism was applied to synthesize the 2,4,5TMCC compound and its single crystal was grown by a slow evaporation solution growth (low cost) technique. The crystal structure was confirmed by powder X-ray diffraction analysis. The robust vibrational study has been done using FT-IR and FT-Raman spectra and its NLO activity was discussed. The factor group analysis was also performed. The optical absorption spectrum was recorded and the band gap was calculated to be 2.8eV. In photoluminescence spectrum, an intense emission band at ~540nm has been observed which shows that the grown crystals can be used in green organic light emitting diodes and laser applications. To achieve the stable ground state molecular geometry of 2,4,5TMCC, the computational techniques were applied at different levels of theory using 6-31G* basis set. The calculated geometrical parameters and vibrational spectra are found to be in good agreement with the experimental results. To probe the optical properties of the title compound the time dependent density functional theory was applied. The excitation wavelength was observed at ~398.63nm calculated at B3LYP/6-31G* level of theory and found close to experimental value (i.e. 396nm). The static first hyperpolarizability value is found to be 136 times higher than prototype urea molecule. Additionally, the molecular level approach was attained as HOMO-LUMO gap and electrostatic potential maps. The DSC study reveals that the titled material is stable up to 149°C. The photophysical and nonlinear optical properties suggest that the titled material could be a better choice for the fabrication of optoelectronic devices.
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Affiliation(s)
- Mohd Shkir
- Advanced Functional Materials & Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, P.O. Box. 9004, Abha 61413, Saudi Arabia.
| | - P S Patil
- Department of Physics, K. L. E. Institute of Technology, Opposite Airport, Gokul, Hubballi 580 030, India
| | - M Arora
- CSIR-National Physical Laboratory, Dr K. S. Krishnan Road, New Delhi 110012, India
| | - S AlFaify
- Advanced Functional Materials & Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, P.O. Box. 9004, Abha 61413, Saudi Arabia
| | - H Algarni
- Advanced Functional Materials & Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, P.O. Box. 9004, Abha 61413, Saudi Arabia
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45
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Wang CW, Hui K, Chai JD. Short- and long-range corrected hybrid density functionals with the D3 dispersion corrections. J Chem Phys 2016; 145:204101. [DOI: 10.1063/1.4967814] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Chih-Wei Wang
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Kerwin Hui
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Jeng-Da Chai
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
- Center for Theoretical Sciences and Center for Quantum Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
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46
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Raeber AE, Wong BM. The Importance of Short- and Long-Range Exchange on Various Excited State Properties of DNA Monomers, Stacked Complexes, and Watson-Crick Pairs. J Chem Theory Comput 2016; 11:2199-209. [PMID: 26574420 DOI: 10.1021/acs.jctc.5b00105] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present a detailed analysis of several time-dependent DFT (TD-DFT) methods, including conventional hybrid functionals and two types of nonempirically tuned range-separated functionals, for predicting a diverse set of electronic excitations in DNA nucleobase monomers and dimers. This large and extensive set of excitations comprises a total of 50 different transitions (for each tested DFT functional) that includes several n → π and π → π* valence excitations, long-range charge-transfer excitations, and extended Rydberg transitions (complete with benchmark calculations from high-level EOM-CCSD(T) methods). The presence of localized valence excitations as well as extreme long-range charge-transfer excitations in these systems poses a serious challenge for TD-DFT methods that allows us to assess the importance of both short- and long-range exchange contributions for simultaneously predicting all of these various transitions. In particular, we find that functionals that do not have both short- and full long-range exchange components are unable to predict the different types of nucleobase excitations with the same accuracy. Most importantly, the current study highlights the importance of both short-range exchange and a nonempirically tuned contribution of long-range exchange for accurately predicting the diverse excitations in these challenging nucleobase systems.
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Affiliation(s)
- Alexandra E Raeber
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California, Riverside , Riverside, California 92521, United States
| | - Bryan M Wong
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California, Riverside , Riverside, California 92521, United States
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47
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Eisenberg AS, Nathan M, Juszczak LJ. Excited state electron distribution and role of the terminal amine in acidic and basic tryptophan dipeptide fluorescence. J Mol Struct 2016; 1118:56-67. [DOI: 10.1016/j.molstruc.2016.03.098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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48
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Abstract
![]()
The accuracies of
the excited-state dipole and quadrupole moments
obtained by TD-DFT are assessed by considering 16 different exchange-correlation
functionals and more than 30 medium and large molecules. Except for
excited-state presenting a significant charge-transfer character,
a relatively limited dependency on the nature of the functional is
found. It also turns out that while DFT ground-state dipole moments
tend to be too large, the reverse trend is obtained for their excited-state
counterparts, at least when hybrid functionals are used. Consequently,
the TD-DFT excess dipole moments are often too small, an error that
can be fortuitously corrected for charge-transfer transition by selecting
a pure or a hybrid functional containing a small share of exact exchange.
This error-cancelation phenomena explains the contradictory conclusions
obtained in previous investigations. Overall, the largest correlation
between CC2 and TD-DFT excess dipoles is obtained with M06-2X, but
at the price of a nearly systematic underestimation of this property
by ca. 1 D. For the excess quadrupole moments, the average errors
are of the order of 0.2–0.6 D·Å for the set of small
aromatic systems treated.
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Affiliation(s)
- Denis Jacquemin
- Laboratoire CEISAM - UMR CNRS 6230, Université de Nantes, 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France.,Institut Universitaire de France, 1 rue Descartes, 75231 Paris Cedex 5, France
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49
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Oviedo MB, Ilawe NV, Wong BM. Polarizabilities of π-Conjugated Chains Revisited: Improved Results from Broken-Symmetry Range-Separated DFT and New CCSD(T) Benchmarks. J Chem Theory Comput 2016; 12:3593-602. [DOI: 10.1021/acs.jctc.6b00360] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Belén Oviedo
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California-Riverside, Riverside, California 92521,United States
| | - Niranjan V. Ilawe
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California-Riverside, Riverside, California 92521,United States
| | - Bryan M. Wong
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California-Riverside, Riverside, California 92521,United States
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50
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Mahendran V, Pasumpon K, Thimmarayaperumal S, Thilagar P, Shanmugam S. Tetraphenylethene–2-Pyrone Conjugate: Aggregation-Induced Emission Study and Explosives Sensor. J Org Chem 2016; 81:3597-602. [DOI: 10.1021/acs.joc.6b00267] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Vaithiyanathan Mahendran
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | - Kamaraj Pasumpon
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | | | - Pakkirisamy Thilagar
- Department
of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India
| | - Sivakumar Shanmugam
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
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